Publication number: 20120075549
Abstract: A white light emitting diode (LED) device includes a blue LED light source, a sealant material, a green phosphor material, and an orange phosphor material. The sealant material covers the blue LED light source. The green phosphor material distributed in the sealant material includes (Lu1-x-y-a-bYxGdy)3(Al1-zGaz)5O12:CeaPrb, wherein 0?x?1, 0?y?1, 0?z?0.1, 0?a?0.2, and 0?b?0.1. The orange phosphor material, which is also distributed in the sealant material, include the compound A, the compound B, or both. The compound A is (Sr1-x-y-zCaxBayMgz)2SiO4:Euw, wherein 0?x?1, 0?y?1, 0?z?1, and 0.03?w?0.2. The compound B is (M1)x(M2)y(Si,Al)12(O,N)16, wherein M1 represents Li, Mg, Ca, or Y, M2 represents Ce, Pr, Eu, Tb, Yb, or Er, 0.05?x+y?1.5, and 0?y?0.7.
Type:
Application
Filed:
August 5, 2011
Publication date:
March 29, 2012
Applicant:
AU OPTRONICS CORPORATION
Inventors:
Ruei-Teng Lin, Wei-Chih Ke, Chih-Lin Wang